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[159.2.239.150]) by smtp.gmail.com with ESMTPSA id af79cd13be357-9377e30adcesm438997585a.4.2026.08.27.06.10.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Aug 2026 06:10:26 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wzZs9-0000000FntS-2wGs; Thu, 27 Aug 2026 10:10:25 -0300 Date: Thu, 27 Aug 2026 10:10:25 -0300 From: Jason Gunthorpe To: Zhaoyu Liu Cc: joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, baolu.lu@linux.intel.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] iommu/sva: remove iommu_sva_present flag Message-ID: <20260827131025.GF1449020@ziepe.ca> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sun, Aug 23, 2026 at 05:24:36PM +0800, Zhaoyu Liu wrote: > The global iommu_sva_present bool merely mirrors > !list_empty(&iommu_sva_mms) under the same mutex. Remove it and rely > on list_for_each_entry to handle the empty list case, which is a no-op. > > Signed-off-by: Zhaoyu Liu > --- > drivers/iommu/iommu-sva.c | 14 +++----------- > 1 file changed, 3 insertions(+), 11 deletions(-) Reviewed-by: Jason Gunthorpe Jason